Water and air valve for steam-heating systems.



E. W, CUMFORT. WATER AND AIR VALVE FOB- STEAM HEATING SYSTEMS.

APPLIOATIOH FILED JULY 25, 1907.

Eatented June 1, 1909,

Wit" ammo 19 motor controlled by huurrn STATES PATE EDWARD W .'OOMEQRT;OF'MERCHANTVILIiE,NEW JERSEY ASSIGNQR II'ISTER & ClvIPA1 IY, CORPORATION or NEW JERSEY:

No. 923,333. Y

i To all whom it may concern:

' Be it known that I, EDWARD W. CoMFoR T,

of Merchantville, county of Camden, and

. State of New Jersey, have invented an Imopen airduct. ciency lromeach radlatingunit it is necesrovement in Water .and Air -Valves V for team-Heating Systems, of which the following is a specification. More that class of valves in which the valve-piece particularly my invention relates to whichcontrols the outlet is operated by a the accumulation of the the 'air is discharged through a constantly To secure the greatest .eflisary that all of the steam should be con- .densed before passing into the return, as any escape or waste-of uncondensed vapors at theradiator. dl-fliculty hasbeenexperienced in'preventing means a proportional loss of latent heatunits In valves of this character such waste, as uncondens'ed vapors are liable to pass through the constantly open duct provided for the discharge ofair, and more or-less steam is blown through the thorouglr fare after the water is discharged and just before the valve fully closes. This is particularly true of vacuum systems in which .a suction or partial vacuum is maintained in the returns connected with the outlets of the valves.

It is the object of this. invention to effectively prevent this waste of uncondensed steam and vapors either through the air duct or by leakage at the valve-piece.

In-the drawings: Figure-1 is a vertical scctlonal view ofa valve embodying the invention; Fig. 2 is a similar view illustrating another form; and Fig. 3 is a transverse section a is the valve-body having an inlet 1) and outlet 0 and the valve-passageway or thoroughfare, which latter is preferably in a removable threaded seat-piece i screwed into the body.

piece This motor consists of a hollow shell carried by a hollow tube g, the end of which constitutes the valve-piece. The shell e is located at the upper end of the tube g so that the lower end of the tube projects down for a substantial distance below the shell and the shell is elevated above the bottom of the valve-body with its bottom preferably in line with or above the inlet b. ,From this it re- A ER AND AIR VALVE roa sTnAM-HEATme'sYsrEMs;

a Specification 51 Letters Patent.

below the screw-threads.

pass into the annulars be greatly which will act as a spiralcapillary.duct to e is the motor which carries the valve-- TO FIQ K ,.11 g ro wAaRiauw 'Patented une l,

sults that a deep .with a spiral groove m forming a spiral fpassageway for,;-air and. uncondensed va'p qli blitweenihetube' and, guide from the therou'gn fare d to the upper-part of the valve-body above the motor. j l1 "n is a dependingwall carried by the cap andsurrounding the shell with its lower edge preferably extending belowthe top of the inlet and substantially level withthe bottom of the motor e when the same is in lowered position asinFigs. 1- and 3. In the construction shown in Fig. lthjs wall a iscomposed of a cylinder carried by t he cap 7c, while in the construction showniin Fig.2 it. is Qanintegral depending portion of the cap The air and vapor that enter the valve will ace between; the motore and the surroun ingwall a thence through the open end ofthe tube 9 and down through thespiral passageway between the tube and threaded ,guide to the outlet d. Air will pass freely and rapidly, but the passage of uncondensed steam-and vapors will retarded in the spiral passageway,

condense the vapors, so thatpracticallyno uncondensed vapors will escape from said duct into the outlet 0 and thence into the returns The water of condensation will accumulate in the well to without causing the motor to operate until it rises into the annular space between the wall n and the motor 6, at which time the motor will rise and lift 9 the tube g, allowing the water to flow out until its level falls again below the wall n. The well '21) will thus be kept more or less full of water about the lower end of the tube 9 and valve-piece f, and this body of water will act effectively to seal the outlet to the escape of vapor or steam at all times. By having the extended end of the tube g thus submerged in a well of Water below the motor and wall n, I am ,able to effect the closing of the thoroughfare d before the water has all passed out and the blowing ofsteam or uncondensed vapors through the thoroughfare just before the valve closes is prevented. The extension of the spiral guide p ket s fa 'd a movable vertical tu stem j into the lower end of the tube 9 beyond the motor e makes of the air assageway a long capillary duct through w 'ch the steam and va ors cannot pass without being condensed. t results therefore that practically no uncondensed vapors will escape and that the maximum efficiency of t 1e steam supplied to the radiating unit will be obtained.

Whatl claim is as follows:

1. A valve for the urpose described consisting of a valve-b0 y having an inlet and an outlet, the inlet being located at a substantial distance above the outlet to form a deep well in the lower art of the valvebody, e having a contracted assageway through it open at both ends and swing its lower end resting on the base of the valv -body and'opening into the outlet and carrying the valve-piece to control said outlet, and a float carried by the upper portion of said tube with its bottom at or above the inlet, the lower end of the tube extending below the float through said deep well.

2. A valve for the urpose described consisting of a valve-b0 having an inlet and an outlet, the inlet being located at a substantial distance above the outlet to forma dee well in the lower part of the valve-body, a movable vertical tube open at both ends having its lower end resting on the base of the valve-body and opening into the outlet and carrying the valve-piece to control said outlet, 9. float carried by the upper portion of 1 said tube with its bottom at or above the inlet, the lower end of the tube extending below the float through said deep well, and a guide rod carried by the valve-body and extending down into said tube substantially into the lower end thereof beyond the level of the bottom of'the float carried by said tube and forming a contracted passageway with the walls of the tube.

3. A valve forthe 'urpose described consisting of a valve-b0 y having -an 'lnlet and an outlet, the inlet being located at a substantial distance above the outlet to form a deep well in the lower part of the valve-body, a movable vertical tube open at both ends having its lower end resting on the base of the valve-body and opening into the outlet and carrying the valve-piece to control said outlet, a float carried by the upper portion of said tube with its bottom at'or above the inlet, the lower end of the tube extending below the float through said deep Well, and a spirally grooved guide rod carried by the valve-body and extending down into said tubesubstantially into the lower end thereof beyond the level of .the bottom of the float carried by said tube and forming a contracted spiral passage way with the walls of the tube.

4. A valve for the urpose described consisting of a valve-boc y having an inlet and an outlet, the inlet being located at a substantial distance above the outlet toform a deep well in the lower part of the valve-body,

a movable vertical tube open at both ends having its lower end resting on the base of the valve-body and. opening into the outlet and carrying the valve-piece to control said outlet, a float carried by theupper portion of said tube with its bottom at or above the inlet, the lower end of the tube extending below the float through said deep well and said tube having a contracted passageway through it, and a wall surrounding said float and having its lower edge substantially level with the bottom of said float.

In testimony of which invention, I have hereunto set my hand. EDWARD W. COMFORT.

Witnesses:

J. LOGAN Frr'rs, F. JOSEPHMILLER. 

